Bernadette Kester. Filmfront Weimar. Representaties van de Eerste Wereldoorlog in Duitse filme uit de Weimar periode (1919-1933). Hilversum: Verloren, 1998.
remarks:
First cooperation of director Heinz Paulk and actor Carl de Vogt.
Weddinge`s "success" was only possible because at that time the submarines` capabilities were greatly underestimated as they were considered to be merely a means of reconnaissance. When first two ships were sunk, the British thought they had hit mines but never considered immediate enemy contact. As the survivors of the these two ships had been taken on board the "Cressy", more than 2.000 seamen drowned when she was also hit by a torpedo.